After installing Kali Linux on hard drive or on virtual machine, we may have come across with a warning message of " Low Disk usage ". It happens when we allocate insufficient disk space during partition for kali linux or else when we do a regular "update" and "upgrade" of patches or downloading softwares. Kali Linux comes with a graphical built-in tool, i.e. Disk Usage Analyzer . This tool helps you to check the disk space usage. There are other options too, to check usage as per file system. If you need to check from terminal(for non-gui users), then there are two classic commands available for every linux distros, i.e. (a) df : Report file system disk space usage (b) du : Estimate file space usage df command is used to check free disk space. You can type df -h or df -k to list free disk space. It displays statistics about the amount of free disk space on the specified file system or on the file system of which file is a part. Values are displayed in...